poking at renderer interface in assimp_loading example

examples/assimp_loading/main.cpp

@@ -1,9 +1,11 @@
 
 #include <SDL2/SDL.h>
+#include <glm/glm.hpp>
 
+#include "camera.h"
 #include "dumbLog.h"
 #include "renderer.h"
-#include "mesh.h"
+#include "entity.h"
 
 
 typedef void (*frame_callback_fn) (render_state*);
@@ -14,8 +16,9 @@ doFrameCallback(render_state* rs)
 }
 
 void
-doRenderLoop(render_state* rs, frame_callback_fn callback_fn)
+doRenderLoop(render_state* rs, frame_callback_fn callback_fn, Entity* entities, uint entity_count)
 {
+	// TODO: move frame delay to renderFrame()
 	const uint TARGET_FPS = 60;
 	const uint FRAME_DELAY = 1000 / TARGET_FPS;
 	uint frameStart, frameTime;
@@ -25,6 +28,7 @@ doRenderLoop(render_state* rs, frame_callback_fn callback_fn)
 	while (running) {
 		frameStart = SDL_GetTicks();
 
+		// TODO: add a better structure for input, and provide a callback to use here
 		while (SDL_PollEvent(&e)) {
 			if ((e.type == SDL_KEYDOWN && e.key.keysym.sym == SDLK_ESCAPE)
 				|| e.type == SDL_QUIT) {
@@ -33,7 +37,8 @@ doRenderLoop(render_state* rs, frame_callback_fn callback_fn)
 		}
 
 		callback_fn(rs);
-		renRenderFrame(rs, nullptr, 0);
+		// TODO: entity pointer and entity count should be stored somewhere on the render_state object
+		renRenderFrame(rs, entities, entity_count);
 		SDL_GL_SwapWindow(rs->handles.window);
 		frameTime = SDL_GetTicks() - frameStart;
 
@@ -46,15 +51,34 @@ int
 main()
 {
 	render_state* rs = renInit();
+
 	meInitAssimp();
-	meMeshGroup mg;
 
-	if (meLoadFromFile(mg, "../data", "../data/spaceship.glb")) {
-		doRenderLoop(rs, doFrameCallback);
+	// TODO: entInit() doesn't allocate memory because we want to do the allocation in
+	// 	one big block, but this is really clunky to use
+	Entity spaceship;
+
+	// TODO: this should be handled in entInit
+	// TODO: utilCopyCStr() can fail, and returns false
+	utilCopyCStr(spaceship.model_filename, "../data/spaceship.glb", 256);
+	entSetWorldPosition(spaceship, 0, 0, 0);
+
+	// set entity scale, rotation, world_transform to defaults :( ...
+
+	// need to finish loading binary texture data in mesh::loadDiffuseTexture()
+
+	// setup camera
+	glm::vec3 cam_pos(0, -100, 100);
+	cameraInitPerspective(rs->cam, cam_pos, spaceship.translation, rs->cam.world_up);
+
+	if (entInit(spaceship, "../data", rs->default_shader)) {
+		doRenderLoop(rs, doFrameCallback, &spaceship, 1);
 	} else {
-		LOG(Error) << "Error loading mesh, exiting\n";
+		LOG(Error) << "Error initializing entity, exiting\n";
 	}
 
+
+	// TODO: way more cleanup to do :(, see hexgame::cleanUp()
 	meShutdownAssimp();
 	return 0;
 }

src/renderer.cpp

@@ -30,7 +30,7 @@ void openglDebugCallback(GLenum source, GLenum type, GLuint id, GLenum severity,
 					GLsizei length, const GLchar* message, const void* userParam);
 bool initSDL(SDL_Handles& handles);
 bool createWindow(SDL_Handles& handles, v2i& viewport_dims);
-bool initGlContext(SDL_Handles& handles);
+bool initContext(SDL_Handles& handles);
 bool initGlOptions();
 bool initDebugRenderGroup(render_state* rs);
 void setDefaults(render_state* rs);
@@ -46,7 +46,7 @@ renInit()
 
 	if (initSDL(rs->handles) &&
 		createWindow(rs->handles, rs->viewport_dims) &&
-		initGlContext(rs->handles) &&
+		initContext(rs->handles) &&
 		initGlOptions() &&
 		rgInitShaderProgram(rs->default_shader, DEFAULT_VERTEX_SHADER, DEFAULT_FRAGMENT_SHADER) &&
 		initDebugRenderGroup(rs) )
@@ -167,7 +167,7 @@ createWindow(SDL_Handles& handles, v2i& viewport_dims)
 }
 
 bool
-initGLContext(SDL_Handles& handles)
+initContext(SDL_Handles& handles)
 {
 	handles.glContext = SDL_GL_CreateContext(handles.window);